CN103811231A - Movable contact arm for molded case circuit breaker and movable contact arm assembly - Google Patents

Movable contact arm for molded case circuit breaker and movable contact arm assembly Download PDF

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Publication number
CN103811231A
CN103811231A CN201310471058.XA CN201310471058A CN103811231A CN 103811231 A CN103811231 A CN 103811231A CN 201310471058 A CN201310471058 A CN 201310471058A CN 103811231 A CN103811231 A CN 103811231A
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CN
China
Prior art keywords
acting arm
coherent substance
breaker
plastic casing
movable contact
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201310471058.XA
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Chinese (zh)
Other versions
CN103811231B (en
Inventor
金旻奎
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LS Electric Co Ltd
Original Assignee
LS Industrial Systems Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by LS Industrial Systems Co Ltd filed Critical LS Industrial Systems Co Ltd
Publication of CN103811231A publication Critical patent/CN103811231A/en
Application granted granted Critical
Publication of CN103811231B publication Critical patent/CN103811231B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
    • H01H73/02—Details
    • H01H73/04—Contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/20—Bridging contacts
    • H01H1/2041—Rotating bridge
    • H01H1/2058—Rotating bridge being assembled in a cassette, which can be placed as a complete unit into a circuit breaker
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/20—Bridging contacts
    • H01H1/2041—Rotating bridge
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/20—Bridging contacts
    • H01H1/2041—Rotating bridge
    • H01H1/205—Details concerning the elastic mounting of the rotating bridge in the rotor
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/24—Electromagnetic mechanisms
    • H01H71/2472—Electromagnetic mechanisms with rotatable armatures
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
    • H01H73/02—Details
    • H01H73/04—Contacts
    • H01H73/045—Bridging contacts

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  • Breakers (AREA)

Abstract

The present disclosure is to provide a movable contact arm capable of securing a revolution radius to a closed position of the movable contact arm such that adhesive materials on the shaft due to arc scattering materials can be removed with no installation of additional elements, and a movable contact arm according to the present disclosure may comprise an adhesive material removal portion formed on a lateral surface at which a contact of the movable contact arm is located, and configured to minimize a contact area with adhesive materials so as to remove the adhesive materials due to an arc.

Description

For acting arm and the acting arm assembly of breaker of plastic casing
Technical field
The disclosure relates to breaker of plastic casing (being after this abbreviated as " MCCB "), and more particularly, relate to acting arm and acting arm assembly for circuit breaker, this circuit breaker can be removed the coherent substance on axle, and this coherent substance is to be attached on axle and to form foreign matters such as the scatterer producing due to electric arc.
Background technology
MCCB is a kind of power equipment; there is the function of switching the relatively low pressure power circuit with hundreds of volt; and detect this fault current automatically to cut off the defencive function of circuit there is the fault current that can occur such as overcurrent or short circuit current on circuit time, protective circuit and be connected to the electric loading equipment of circuit thus.
As everyone knows, such MCCB can mainly comprise: fix contact arm, be configured to be electrically connected to the mains side of circuit; Acting arm, is configured to be electrically connected to the load side of circuit, and can rotate to the make position and the open position separating with corresponding fixing contact arm that make with corresponding fixing contact arm contact; Switching mechanism, is configured to be provided for corresponding acting arm to be driven into the actuating force of closure or open position; Axle, thus be configured to support acting arm by rotating from the actuating force of switching mechanism, and form acting arm assembly together with acting arm; Release gear, is configured to detect this fault current in the time breaking down electric current in circuit and acting arm is driven into open position by trigger switch mechanism; Arc-extinguishing mechanism, the electric arc being configured to producing between the transfer period of circuit carries out arc extinguishing; And shell, for holding each composed component.
The disclosure relates to acting arm and the acting arm assembly in each composed component of breaker of plastic casing, and the example of correlation technique can be referring to the Korean patent No. 10-1141537(denomination of invention that licenses to applicant of the present invention: for the acting arm assembly to breaker of plastic casing current limliting (Movable contact arm assembly for current limiting molded case circuit breaker)), and thereby will omit illustrated configuration and the specific descriptions of operation.
But, according to correlation technique, the solution of the generation of the phenomenon that is not reduced or is restricted for the radius of turn of the make position to acting arm, wherein, during the switch of circuit, be attached on the retainer of axle such as the foreign matter of the scatterer producing due to electric arc, this retainer is determined the make position of rotation boundary to acting arm.
For hinder the radius of turn of acting arm and the problem of reduction contactor performance due to such coherent substance, design a kind of method: on the path producing between the contact site of electric arc and the peristome of axle, the extra synthetic resin with fabulous resistive properties is set and reinvents baffle plate to prevent from generating coherent substance, but its problem causing is, the manufacturing cost of breaker of plastic casing is because extra element increases, and installing space is because other existing element of breaker of plastic casing is restricted.
Summary of the invention
Correspondingly, designed the disclosure to solve the foregoing problems of correlation technique.Object of the present disclosure is to provide a kind ofly can guarantee the acting arm of radius of turn to the make position of acting arm, makes it possible to not install additional element and just can remove the coherent substance producing due to electric arc scatterer on axle.
Another object of the present disclosure is to provide a kind ofly can guarantee the acting arm assembly of radius of turn to the make position of acting arm, makes it possible to not install additional element and just can remove the coherent substance producing due to electric arc scatterer on axle.
An object of the present disclosure can be by providing a kind of acting arm for breaker of plastic casing to complete, and this acting arm comprises:
Coherent substance removal portion, it is formed on the side at contact place of acting arm, and is configured to minimize with the contact area of coherent substance to remove the coherent substance producing due to electric arc.
Another object of the present disclosure can be by providing a kind of acting arm assembly for breaker of plastic casing to complete, and this acting arm assembly comprises:
Acting arm; And
Axle, is configured to support and drives acting arm to circuit open position or circuit closed position, and has for determining the retainer of rotation boundary to the circuit closed position of acting arm,
Wherein acting arm comprises:
Coherent substance removal portion, it is formed on the side at the contact place of acting arm, and is configured to minimize with the contact area of coherent substance to remove because electric arc adheres to the coherent substance on the retainer of axle.
According to preferred scheme of the present disclosure, the longitudinal section of coherent substance removal portion can have wedge shape.
According to preferred scheme of the present disclosure, the longitudinal section of coherent substance removal portion can have arc.
According to preferred scheme of the present disclosure, the longitudinal section of coherent substance removal portion can have zigzag.
Accompanying drawing explanation
Appended accompanying drawing has illustrated inventive embodiment and together with the description for explaining the principle of invention, and the further understanding that it provides invention is incorporated to and forms the part of this specification.
In the accompanying drawings:
Fig. 1 illustrates according to the longitudinal section diagram of the configuration of the acting arm assembly of preferred embodiment of the present disclosure, wherein, blocks in the vertical axle to expose internal configurations wherein;
Fig. 2 is that explanation is according to the perspective view of the configuration of the acting arm of preferred embodiment of the present disclosure;
Fig. 3 illustrates according to the longitudinal section diagram of the acting arm of the first preferred embodiment of the present disclosure, wherein illustrates the configuration of coherent substance removal portion;
Fig. 4 illustrates according to the longitudinal section diagram of the acting arm of the second preferred embodiment of the present disclosure, wherein illustrates the configuration of coherent substance removal portion; And
Fig. 5 illustrates according to the part end view of the acting arm of the second preferred embodiment of the present disclosure, wherein illustrates the configuration of coherent substance removal portion.
Embodiment
By the following description for preferred embodiment of the present disclosure with reference to accompanying drawing, will more clearly understand target of the present disclosure and for completing configuration of the present invention and the working effect of aforementioned target.
First, describe according to the configuration of the acting arm assembly for breaker of plastic casing of preferred embodiment of the present disclosure with reference to Fig. 1.
Can comprise acting arm 3 as illustrated in accompanying drawing and axle 4 according to the acting arm assembly 10 for breaker of plastic casing of preferred embodiment of the present disclosure.
According to preferred scheme of the present disclosure as shown in Figure 2, can configure acting arm 3 for to there is respectively a pair of contact acting arm of contact 3a at two terminal parts of length direction, and comprise the coherent substance removal 3b of portion.
The coherent substance removal 3b of portion is formed on the side at contact place of acting arm, and has for minimizing with the contact area of coherent substance (referring to the reference character " E " of Fig. 1) to remove because electric arc adheres to the coherent substance on the retainer 4a of axle 4.
Below with reference to Fig. 3 to 5 descriptions according to the configuration of the coherent substance removal 3b of portion of various embodiment.
Axle 4 is configured to support and drives acting arm 3 to circuit open position or circuit closed position, and axle 4 has retainer 4a to determine the circuit closed position of rotation boundary to acting arm 3.In Fig. 1, according to preferred embodiment, can configure retainer 4a is a pair of retainer 4a that is mutually symmetrical and places, and at the central portion of retainer 4a, pin hole 4b is set respectively.The pivot pin (not shown) that can be provided for respectively transmitting rotary driving force from switching mechanism (not shown) is to pass through pin hole 4b.
As shown in Figure 1, may further include spring 5 and contact lever 6 according to the acting arm assembly 10 for breaker of plastic casing of preferred embodiment of the present disclosure.
Spring 5 is contact spring (, compression spring), for maintaining the state that acting arm 3 is contacted with corresponding fixing contact arm in the time making the acting arm 3 of acting arm assembly 10 contact with current flowing on circuit with fixing contact arm (not shown).But, in current limliting operating period, spring 5 can be at the predetermined point of rotation of acting arm 3 (, dead point) be in the direction of acting arm 3 and corresponding fixing contact arm separation and apply power, in case stop contact arm 3 turns back in the direction contacting with corresponding fixing contact arm by contact lever 6, wherein, in current limliting operation, due to the conduction of the abnormal large electric current on circuit, rotate acting arm 3 to separate with corresponding fixing contact arm by the electromagnetic repulsion force generating between the contact 3a in acting arm 3 and the contact of corresponding fixing contact arm.The configuration of spring 5 and contact lever 6 and operation more concrete is described in aforesaid Korean Patent Registration 10-1141537(denomination of invention: for the acting arm assembly to breaker of plastic casing current limliting) open text open, and thereby by the specific descriptions of omitting wherein.
On the other hand, with reference to Fig. 2 to 5 descriptions according to the configuration of the coherent substance removal 3b of portion of various embodiment.
As shown in Figure 3, can configure the coherent substance removal 3b of portion according to the first preferred embodiment of the present disclosure, make its longitudinal section have nosed surface 3b1, this nosed surface 3b1 has wedge shape (, letter " V " shape).
As shown in Figure 2, can configure according to the coherent substance removal 3b of portion of previous embodiment and have continuous wedge shape, that is, on the side at contact place, letter " V " shape of projection and its protruding highly linear ground is continuously shrilly.
Further, as shown in Figure 5, can configure according to the coherent substance removal 3b of portion of the first embodiment and make its side there is zigzag,, on the side at contact place, be formed with zigzag front-end surface 3b3, sharp protrusion portion forms thereon as multiple teeth with depressed part.The previous embodiment with such zigzag side can also be formed as its longitudinal section and have wedge shape as shown in Figure 3.
As shown in Figure 4, can configure according to the coherent substance removal 3b of portion of the second preferred embodiment of the present disclosure and make its longitudinal section have arc, this arc has arcuate front ends surface 3b2.
On the other hand, will describe according to the working effect of the acting arm for breaker of plastic casing of preferred embodiment of the present disclosure and acting arm assembly with reference to Fig. 1 below.
Breaker of plastic casing generates electric arc during carrying out contactor between contact, and the retainer 4a that the scatterer producing due to such electric arc adheres to the axle 4 in Fig. 1 is above to generate coherent substance (E).
Can there is the coherent substance removal 3b of portion according to the acting arm for breaker of plastic casing of preferred embodiment of the present disclosure and acting arm assembly, it is configured to minimize the contact area with coherent substance (referring to the symbol in Fig. 1 " E "), and when the acting arm 3 and the acting arm assembly 10 that drive breaker of plastic casing to contact with corresponding fixing contact arm (not shown) position time, the coherent substance removal 3b of portion can destroy coherent substance (E) when strike coherent substance (E) is located, removes thus them.
According to the acting arm for breaker of plastic casing of preferred embodiment of the present disclosure, the longitudinal section of the coherent substance removal 3b of portion has nosed surface 3b1, this nosed surface 3b1 has wedge shape, and therefore the nosed surface 3b1 of the sharp-pointed wedge shape coherent substance removal 3b of portion can destroy coherent substance effectively to remove them.
According to the acting arm for breaker of plastic casing of another preferred embodiment of the present disclosure, the longitudinal section of the coherent substance removal 3b of portion has arcuate front ends surface 3b2, this arcuate front ends surface 3b2 has arc, and therefore during aforementioned closed procedure, can minimize with the contact area of coherent substance (E), obtain thus and prevent from coherent substance (E) pressurized or adhere to the coherent substance removal 3b of portion going up, can destroying coherent substance (E) to remove their effect simultaneously.
According to the acting arm for breaker of plastic casing of the present disclosure, the side of the coherent substance removal 3b of portion has zigzag front-end surface 3b3, this zigzag front-end surface 3b3 has zigzag, and therefore can minimize with the contact area of coherent substance (E), obtain thus and prevent coherent substance (E) at pressurized during aforementioned closed procedure or adhere on the coherent substance removal 3b of portion, can destroy coherent substance (E) to remove their effect simultaneously.
Can comprise acting arm 3 and axle 4 according to the acting arm assembly for breaker of plastic casing of the present disclosure, this axle 4 has retainer 4a, be configured to support and drive acting arm 3 to circuit open position or circuit closed position, and determining the circuit closed position of rotation boundary to acting arm; And acting arm can be included in the coherent substance removal 3b of portion forming on the side at contact 3a place of acting arm, be configured to minimize with coherent substance (E) thus contact area remove because electric arc adheres to the coherent substance on the retainer 4a of axle, obtain thus in the effect of destroying and remove the coherent substance on the retainer 4a that adheres to axle during the closed procedure of acting arm.

Claims (8)

1. for an acting arm for breaker of plastic casing, it is characterized in that, this acting arm comprises:
Coherent substance removal portion, it is formed on the side at the contact place of acting arm, and is configured to minimize with the contact area of coherent substance to remove the coherent substance producing due to electric arc.
2. according to the acting arm for breaker of plastic casing of claim 1, the longitudinal section of wherein said coherent substance removal portion has wedge shape.
3. according to the acting arm for breaker of plastic casing of claim 1, the longitudinal section of wherein said coherent substance removal portion has arc.
4. according to the acting arm for breaker of plastic casing of claim 1, the longitudinal section of wherein said coherent substance removal portion has zigzag.
5. for an acting arm assembly for breaker of plastic casing, it is characterized in that, this acting arm assembly comprises:
Acting arm; And
Axle, is configured to support and drive described acting arm to circuit open position or circuit closed position, and has for determining the retainer of rotation boundary to the circuit closed position of described acting arm,
Wherein, described acting arm comprises:
Coherent substance removal portion, it is formed on the side at contact place of acting arm, and is configured to minimize with the contact area of coherent substance to remove because electric arc adheres to the coherent substance on the retainer of described axle.
6. according to the acting arm assembly for breaker of plastic casing of claim 5, the longitudinal section of wherein said coherent substance removal portion has wedge shape.
7. according to the acting arm assembly for breaker of plastic casing of claim 5, the longitudinal section of wherein said coherent substance removal portion has arc.
8. according to the acting arm assembly for breaker of plastic casing of claim 5, the longitudinal section of wherein said coherent substance removal portion has zigzag.
CN201310471058.XA 2012-11-01 2013-10-10 Acting arm and acting arm assembly for breaker of plastic casing Active CN103811231B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR2020120009996U KR200472735Y1 (en) 2012-11-01 2012-11-01 Movable contact arm for molded case circuit breaker and movable contact arm assembly
KR20-2012-0009996 2012-11-01

Publications (2)

Publication Number Publication Date
CN103811231A true CN103811231A (en) 2014-05-21
CN103811231B CN103811231B (en) 2016-08-31

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US (1) US9269506B2 (en)
EP (1) EP2733714B1 (en)
KR (1) KR200472735Y1 (en)
CN (1) CN103811231B (en)
ES (1) ES2563186T3 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101447041B1 (en) 2013-11-19 2014-10-06 엘에스산전 주식회사 Curcuit breaker
KR101879338B1 (en) * 2016-12-05 2018-07-17 엘에스산전 주식회사 Air circuit breaker
EP3962652A4 (en) * 2019-04-30 2023-01-18 Berkeley Lights, Inc. Methods for encapsulating and assaying cells

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EP1079409A1 (en) * 1999-08-27 2001-02-28 General Electric Company Rotary contact assembly for high ampere-rated circuit breakers
CN101660935A (en) * 2009-09-28 2010-03-03 蒋勤舟 Contact-type oil level sensor improvement device
CN102386029A (en) * 2010-08-31 2012-03-21 上海良信电器股份有限公司 Double-breakpoint movable contact spindle system of moulded case circuit breaker
US20120169440A1 (en) * 2011-01-03 2012-07-05 Lsis Co., Ltd Movable contactor assembly for current limiting type circuit breaker

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JP3721266B2 (en) * 1998-08-04 2005-11-30 株式会社日立産機システム Circuit breaker
KR100595463B1 (en) * 2004-04-16 2006-07-03 엘에스산전 주식회사 A movable contactor assembly for a mould cased circuit breaker
KR100606424B1 (en) 2005-01-29 2006-08-01 엘에스산전 주식회사 A movable contactor assembly for a current limitable circuit breaker
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Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1079409A1 (en) * 1999-08-27 2001-02-28 General Electric Company Rotary contact assembly for high ampere-rated circuit breakers
CN101660935A (en) * 2009-09-28 2010-03-03 蒋勤舟 Contact-type oil level sensor improvement device
CN102386029A (en) * 2010-08-31 2012-03-21 上海良信电器股份有限公司 Double-breakpoint movable contact spindle system of moulded case circuit breaker
US20120169440A1 (en) * 2011-01-03 2012-07-05 Lsis Co., Ltd Movable contactor assembly for current limiting type circuit breaker

Also Published As

Publication number Publication date
KR200472735Y1 (en) 2014-05-20
ES2563186T3 (en) 2016-03-11
CN103811231B (en) 2016-08-31
EP2733714B1 (en) 2015-12-02
US9269506B2 (en) 2016-02-23
US20140116861A1 (en) 2014-05-01
KR20140002763U (en) 2014-05-09
EP2733714A1 (en) 2014-05-21

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